So, i was having trouble with the plugin when i updated it using the poehud auto-update.
Resistance flasks not adhering to the rules you specified or there is a huge delay before it is used again.
I suggest that for those having the same problems should download the original file on github and test it out. If it works, good. If it doesnt, cant help you mate, since im no developer.
GitHub - Xcesius/AutoFlaskManager